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CURRENT STATUS OF ANTELOPES IN CHINA 总被引:1,自引:0,他引:1
UpliftingofQinghai-TibetanPlatcausincemidTertiary'caused-climaticdifferc11tia-tionbetWeenwesternandeasternChina.Ontheotherhand,thestrongmonsoonsincelatePleistoccnehasenhancedtheenvironmentalchanges,westernChinaundersuchenviron-mentalchangeshasbecomedrier'andstepPeanddesertvegetationshavedeveloPedinthesearidAsianinlandwhereasshortalpinevegeta-tionshavedeveloPedontheQinghai-TibetanPlateau.Thus'theenvironn1entalchangesinrecent3million\'earscreated\'asthabitatforUngulatespecies,particularly"… 相似文献
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Nutrias(MyocastorcolIPus)isonekindofvaluablefuranimals.Functionofitsfurkeep-ing-temperatllfeisgoodandit'sakinisdurable,soitsskinandfurarcoftenusedasthemateri-alsoffurcoatandleather.Nutrianleatnotonlytastesdeliciousanddelicate,butalsocontainshighprotein.Nutriacanbefedeasilyanditsfeedingcostislow.Therefore,itisverysuitabletoourcountry.TherehasbeennoreportaboutstiJdyontl1enutritiverequirementofnutriasinChina.ThistestemphasizesonthepropernutTitivercquircll1entofnutfiaandithasprovidedsol1lebasi… 相似文献
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利用电子计算机控制的呼吸测热装置,采用饥饿实验的方法,对育成前期雄性海狸鼠进行了能量维持需要的研究。结果表明,禁食状态下24h产热量为622.64kJ其中蛋白质产热量为73.15kJ,脂肪产热量为549。44kJ,基础代谢率为396.96kJ/D.kg0.75。 相似文献
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我们于1994年3~8月对安徽省女山湖7种生境繁殖鸟类及群落进行了研究。共记录到繁殖鸟类51种,生境Ⅶ种类最多,生境Ⅰ和Ⅲ最少。群落种的多样性指数最大的为生境Ⅶ,最小的为生境Ⅲ。多样性平均数控制图可将7种生境分为3组。依据鸟类对生境利用情况和鸟类群落特征对7种生境进行评价和排序,结果是Ⅶ-Ⅵ-Ⅱ-Ⅳ-Ⅴ-Ⅰ-Ⅲ。 相似文献
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Iare0DUrnONForagingstrategyofbirdsisan~rtancontentinavianbehaviorecol0gy.Jtmainlycontains3asPeCtSt(l)ForaginghabitatseIechon-wheretoforape,(2)Foodselechon-whatwillbeforaged,whichdepedsonPreyssPeCies,abundance,spatialdistribution'movementtw,seasonalfluctUahon,birdslifestoryPeriodandmtorPecificcontestandsoon;(3)Foraginbehaviortws-howtoforape,includin'searching,handlingandtimedistribuhon.Ingeneral,birdshave0ptimalf0ragingstrategy.ForapingbehaviorofshriksisverycomplicatedduringbreedingPeri… 相似文献
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探讨了育成前期雄性海狸鼠饲粮蛋白质适宜水平。试验分四组,饲粮的能量和蛋白质分别为:16289.1kJ/kg,14.46%;16476。9kJ/kg,18.13%;16734.2kJ/kg,20.62%和16334kJ/kg,24.10%。对海狸鼠的体重,日粮蛋白质消化率,能量消化率,蛋白质沉积率进行了测定,结果为饲粮可消化蛋白质适宜水平为15% ̄17%,每日可消化蛋白质与体重,日增重回归关系为:D 相似文献
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探讨育成前期海狸鼠饲粮中能量的适宜水平。实验分四组,饲粮的消化能和消化蛋白质水平分别为12330.5kJ/kg、15.70%;13061.8kJ/kg、15.29%;14210.0kJ/kg、15.13%;14818.2kJ/kg、15.08%。实验结果表明,饲粮消化能水平为14210 ̄14818kJ/kg,日消化能1563 ̄1663kJ时,海狸鼠增重最好。 相似文献
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INTRODUCTIONKoreanpine(Pinuskoraiensis)com-'monlyoccursinmixtUrewithsomehardwoodsPeCiesand,natUrally,becomesold-growth"forestcalledmixedbroad-leaved/Koreanpineforest.ThenatUralforestsmainlydistributedinnortheastChina.TheconesofKoreanpinearelarge,measuringupto2ocminsize.The....,iscalescannotopenuptoletthebig,winglessseedsoutwhentheconesbecomingdry.UndernatUralcondition,theseedsdon'tgerminateuntil2winterslater,buttheseedsinconesusuallybecomerottenowingtofungusorareforagedbysmallrodentsa… 相似文献
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lntroducti0nMan}'pIantshavFt1eshytYLlitsinALItumnil1teInperatezone.Thesefruit3providefoodtbrmanytYugivorouSbirds.BirdsgetnutritiontYomthetYuits,anddispersetheseedsofthesepIantsatthesametime.Manyre-searchesonthistopicaretinishedinMediterraneanScrubIandsand… 相似文献
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INTRODUruONThedata-basetechnolOgyisrarelyusedinStudyandmanagementofChinesewildlife.Nowdata-basetechnolOgyisusedinChinesebirdtaxonomicalsysteminordertodevelopcomputeruseofChinesewildlifen1anagen1ent.ComPuteriZedbirdtaxonolnicalSyste111isqnickerandmoreaccuratethanmanualone.AndstUdsnscanlearnbirdtaxonomicfeatUre,ChinesebirddistribuhonandecolOgicalhabi-tos.aremooManualbirdtaxononllcsystemhasbeenreIahveIystableandPedect.Thebirdtaxo-nonicsysten1wuchisusednowisthebasisofthiscomPut6rsystem.… 相似文献